1995, Starting as a Criminal Investigation Expert

The police dog in front of us is named Chasing Wind.

It has a very imposing name, but it's actually very gentle. It's a female dog, and once it gets used to people, it will often circle around them and wag its tail.

When Han Jianjun was transferred from the police dog training team of Ningshan Police Cadre School, he specifically chose Zhuifeng, intending to breed it himself and develop Nanjiang's own bloodline.

But I haven't had time to deal with it.

He Dazhu didn't come; he took two other police dogs to the sports center to carry out the security plan.

Since he, the full-time instructor, couldn't come, someone else had to fill in temporarily.

Han Jianjun spotted Li Shu, shoved the leash into Li Shu's hand, and asked Li Shu to help track him.

He called out to Tan Guoxiong and led his men to the crime scene to conduct an on-site investigation.

Li Shu and Zhui Feng were left staring at each other.

It looked up at Li Shu and obediently moved closer to Li Shu's feet.

There are actually courses on police dogs at school.

However, it wasn't a specialized course; it was just a few lessons that briefly introduced how to use police dogs.

He Dazhu was the only one in the team who had received training in Ningshan. Due to limited manpower, there were occasional situations where no one was available. Therefore, He Dazhu would be asked to introduce and share with everyone how to use police dogs.

It's just a temporary fix, no big deal.

Right now, he led Zhui Feng to Zheng Cheng's house.

Police dogs need to track the source by scent, and now there are two options.

First, there's Zheng Cheng's clothing, which is readily available.

Secondly, bloodstains are more stable. He Dazhu said that when they were training in Ningshan, Zhuifeng and the others were mainly trained to track bloodstains.

After some consideration, Li Shu decided to focus on clothing.

The woman was shot dead, so Zheng Cheng shouldn't have had any blood on him.

The smell of gunpowder can also mask the smell of blood to some extent.

Inside, Tian Yu was there, his face ashen, but upon seeing Li Shu, he still managed a smile and greeted him.

He was always grateful to Li Shu for solving the Qiao Suqing case.

Time was of the essence, so Li Shu found a few pieces of Zheng Cheng's clothes, especially his underwear, the kind that hadn't been washed.

Police dogs track people primarily by tracking shed skin cells, sweat, oil, and metabolic waste.

And on a man's body, the smell is naturally strongest and most unique in his underwear.

"Follow the wind, sniff!"

Li Shu placed the clothes on the ground, gave the order, and directed Zhui Feng to sniff them.

It moved closer and took a deep sniff.

He quickly called out, indicating that he remembered.

To be on the safe side, Li Shu repeated it twice more to make it form a deeper memory.

Only then was the command issued to let it track.

It quickly crouched down, sniffing around the room and even rummaging through the bed.

He doesn't seem very smart.

Li Shu decided to take the initiative and led it to the back door, letting it search for scents.

This time the scent was simple. It sniffed the ground, quickly called out a warning, and rushed out.

Tian Yu quickly led his men to follow.

Following the path between the houses, they soon arrived at the scene where the woman had been shot.

Then it turned and headed north.

The large crowd at the scene interfered with the olfactory source to some extent.

Tian Yu quickly called for people to come forward and shoo them away.

The people didn't disperse; they continued to climb up and down, crowding forward and pointing at the corpse, discussing it incessantly.

Li Shu simply led Zhui Feng forward, crossing this distance.

Anyway, we know which direction Zheng Cheng ran in.

The road in front of us is a major thoroughfare in the middle of the village. It merges into Erquan Road only two or three hundred meters to the north.

When Tian Yu arrived, he learned that the suspect was heading north, and immediately arranged for people to block the intersection.

However, considering the time difference, the suspect may have already escaped before the lockdown, or if he was lucky, he might have run into a taxi and taken it away.

Heading east, you can reach National Highway 312; heading west, you can reach Guangyuan Street. The bus station is less than five kilometers away.

You can get on the bus by buying a ticket, and it only takes half an hour to get out of Nanjiang.

This place is close to the city center, so transportation is very convenient.

Soon, Chasing the Wind reached the intersection.

Some colleagues have set up a checkpoint here to check passing vehicles and ID cards.

"Team Leader Tian, ​​has the bus station given you any notification?" Li Shu asked.

Tian Yu nodded, saying that he had notified them immediately, and added, "This bastard has a gun on him, he won't pass the security check. I don't think he'd even get rid of the gun."

Guns are the courage of evildoers; such vicious criminals would never easily throw away their guns.

Li Shu nodded, noticing that Zhui Feng was starting to look confused.

The road is busy with pedestrians and vehicles, especially the thick black smoke from car exhaust, which greatly interferes with the police dogs' tracking.

Meanwhile, Li Shu also noticed that some colleagues were walking along the street to the left and right of the intersection, looking for anyone who had seen Zheng Cheng.

"Team Leader Tian, ​​where do you think people would run?" Li Shu asked in return.

Tian Yu frowned: "It's hard to say. What I'm most afraid of is that he'll get lucky and bump into an empty taxi, take it, and drive off. There'll be no way to catch him then."

No sooner had he finished speaking than Xu Qiang and his men caught up with them.

His expression was not good.

A shooting occurred during the National Games, which had a terrible impact.

"How is it?" they asked as soon as they came up.

Li Shu shook his head; the source of the scent ended there.

There is another way, as He Dazhu said, which is to manually analyze the suspect's escape route at the location where the olfactory source is cut off.

Then, after bypassing this node, we can search for the source of the odor and perhaps make a connection.

Li Shu explained the plan, looked at Xu Qiang, and asked where they should go.

It's in the three directions: east, west, and north.

Xu Qiang crossed his arms, his expression extremely serious.

He was in charge of the site and made the decisions.

The key is that this judgment cannot be made lightly; a wrong judgment will waste time and affect the tracking.

After all, you can't read the suspect's mind, so it's hard to guess what the suspect is thinking.

"Let's take a gamble and head north."

Hesitation only leads to more trouble. Xu Qiang gritted his teeth and pointed north.

After passing Erquan Road, there is a large area of ​​villages.

Last year, this place was slated for demolition to build commercial housing.

It's a huge construction site, and in some areas, the demolition negotiations haven't been finalized yet, with some holdout residents.

Further on, there are several villages, including Zhujiali.

The houses are all old and the terrain is complicated, making them a good choice for hiding and shaking off pursuers.

"This guy is smart."

Xu Qiang tried to analyze the situation, pointing to Erquan Road in front of him and saying, "At first glance, heading west leads to the bus station, while heading east takes the national highway. This seems to be the best and fastest way to escape Nanjiang."

"But the suspect knows, we know, and he knows we know, so I think he will still use the old method, do the opposite, and try to mislead us by not taking these two paths."

He then immediately ordered Li Shu to search to the north.

It is a pity.

Li Shu led Zhui Feng across the road and searched for the source of the scent along various alleys to the north, but found nothing.

Even if we expand the search area further north to Zhujiali, we still haven't found anything.

Li Shu stopped.

After chasing for quite some time, Zhui Feng was also a bit tired, and he stuck out his tongue and panted heavily.

"Chasing the Wind, you can't do this well either."

Li Shu touched its head.

Half a day has passed, and there's still no sign of Zheng Cheng.

Those that can be trained as police dogs must be quite intelligent. According to He Dazhu, Zhui Feng is very smart and obedient.

So it probably understood that Li Shu said it couldn't do it, barked once, and turned its head away.

I'm angry.

But she still stole glances at Li Shu, as if to say, "That's because you're no good; you just take me to places with no destination."

"Don't be angry."

Li Shu quickly stroked its head; there were only three precious darlings in the bureau, all of them were like ancestors.

He poured it some water and let it rest. Li Shu looked at Tian Yu, who was traveling with him, and said, "Team Leader Tian, ​​I'm afraid we really can't catch up."

Tian Yu frowned.

In fact, in previous years, there haven't been many successful cases using these three police dogs.

He told Li Shu to rest first, then turned around and took out his walkie-talkie to contact Xu Qiang to discuss a solution.

It's been almost an hour since the incident, and the chances of catching Zheng Cheng are only getting smaller and smaller.

Li Shu also tried to analyze Zheng Cheng's whereabouts himself.

Tian Yu is right, this person won't easily throw away the gun.

Losing a gun makes it easy to get through inspection, but if it's discovered, then the chance to fight to the death is lost.

Taking a taxi to leave is a good option.

However, coinciding with the National Games, security checks were strengthened on major roads leading out of the city, based on the previously prepared security plan.

After the incident, Xu Qiang immediately gave instructions.

Furthermore, while the north direction was selected, instructions were also given simultaneously for the east and west directions to increase manpower and strengthen inspections.

Therefore, Li Shu analyzed that Zheng Cheng should not have left the city yet.

Secondly, this guy likes to think in reverse.

He probably thought the police believed he was trying to flee the city, so he did the opposite, playing the underdog by hiding in the city.

Thinking of this, Li Shu suddenly turned his head and looked back in the direction he had come from.

That bastard probably won't use the same trick again, creating the illusion of escaping to Erquan Road, and then turning back to flee south.